What’s Vulnerable › Vulnerabilities

CVE-2021-3751: Out-of-bounds Write in bfabiszewski/libmobi

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.2% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-09-15 · updated 2026-06-17
• Weakness: CWE-787

Description

libmobi is vulnerable to Out-of-bounds Write

Affected products

• bfabiszewski/libmobi: before 0.7 — fixed in 0.7

How to fix

Upgrade to a fixed version: bfabiszewski/libmobi 0.7. Check the vendor advisory for mitigations.

References

• https://github.com/bfabiszewski/libmobi/commit/ab5bf0e37e540eac682a14e628853b918626e72b
• https://huntr.dev/bounties/fcb4383c-bc27-4b89-bfce-6b041f0cb769
• https://github.com/bfabiszewski/libmobi/commit/ab5bf0e37e540eac682a14e628853b918626e72b
• https://huntr.dev/bounties/fcb4383c-bc27-4b89-bfce-6b041f0cb769

Get alerted when CVE-2021-3751 or the next vulnerability affects your stack